✅Shoulder Mobility & Stability Drill The shoulder joint is designed to be mobile, allowing for a wide range of motion. However, this mobility can come at a cost. The shoulder joint is naturally more vulnerable to dislocation due to the lack of osseous or bony structures there to prevent excessive motion. To compensate for this instability, the surrounding muscles and ligaments must provide the necessary stability to keep the joint in place during movements. This means that there is a large amoun